CN103779830A - Novel surge protection device - Google Patents
Novel surge protection device Download PDFInfo
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- CN103779830A CN103779830A CN201210413149.3A CN201210413149A CN103779830A CN 103779830 A CN103779830 A CN 103779830A CN 201210413149 A CN201210413149 A CN 201210413149A CN 103779830 A CN103779830 A CN 103779830A
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- surge protector
- novel electric
- protection device
- driver element
- electric surge
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Abstract
The invention relates to a novel surge protection device. The novel surge protection device is mainly composed of a disconnection switch, a current sensor, a detection driving unit, a disconnection actuator and a lightning protection device, wherein the lightning protection device is connected in series with the disconnection switch, the detection driving unit in the surge protection device detects current state information in a line according to the current sensor so as to drive the disconnection actuator to drive the disconnection switch to act, such that the surge protection device (SPD) can be separated from a protection line. The novel surge protection device of the invention is advantageous in convenient installation, avoidance of dead zones of an existing surge protection device (SPD) backup protection mode, and strong reliability.
Description
Technical field
The invention belongs to the surge protection technical field of electronic electric equipment.
Background technology
Thunder and lightning is by the charged cloud a kind of special weather phenomenon causing of aloft discharging.Thunder and lightning is the major reason that causes electronic equipment to damage, and it threatens the safe and stable operation of the every field electronic informations such as building, railway, civil aviaton, communication, industry control, military affairs.On the metallic circuits such as the power line being connected with electronic equipment, holding wire and control line, surge protector being installed is one of important measures of lightning protection.Surge protector has been widely used in various fields, has important effect in lightning protection.The quality of its state directly affects its lightning protection effect, thereby the safety of protected equipment is brought to hidden danger.
Present stage SPD has heat protection and two kinds of protective devices of overcurrent protection (internal or external) in use conventionally; thermel protection device is used for protecting the deteriorated heating of lightning protection component; overcurrent protective device is used for preventing the lightning protection component puncture short that transient over-current or overvoltage cause; overcurrent protection is simultaneously as a kind of backup protection mode of heat protection, so can play effective protective action in most of occasions.
But because heat conduction is a relatively slow process; the sensitivity of thermel protection device is low; still can play effective protection for slow temperature-rise period; but for low (in) in pressing system due to the steep temperature rise situation causing under sustained overvoltage state; heat is protected trip gear this process of perception in time and is not moved; cause lightning protection component breakdown; power current enters SPD circuit; in the time that this power current value does not reach the startup value of overcurrent protective device; overcurrent protective device also can not move, thereby causes SPD on fire.
In sum, there is serious protection blind area in protection angle in existing SPD, in this region, and all akinesias of thermel protection device and overcurrent protective device, thus there is serious potential safety hazard.
Summary of the invention
In order effectively to solve the above prior-art problems, the present invention propose a kind of can be easy for installation and the Novel electric surge protector for power-supply system of dependable performance.
The present invention is by the following technical solutions: the present invention is the surge protector for power electronic circuits system, and described surge protector mainly comprises section breaker, current sensor, detection driver element, disjunction actuator and lightning protection component.Described lightning protection component and section breaker series connection, the current information that detection driver element detects according to described current sensor drives disjunction actuator, drives section breaker action, and SPD is departed from from protection circuit.
Described section breaker, current sensor, detection driver element, disjunction actuator and lightning protection component, be all arranged in a housing, is an overall Novel electric surge protector.
The invention is characterized in:
1. this Novel electric surge protector has been abandoned the unsteadiness of thermel protection device and the protection blind area of overcurrent protective device;
2. this Novel electric surge protector is integrated in one lightning protection component, section breaker, current sensor, detection driver element, disjunction actuator, be loaded on housing, can meet the requirement of power consumption equipment to surge protector discharge capacity, response time and three indexs of voltage protection level, strengthen the reliability of equipment;
3. in the time that surge current flows through, detecting driver element has inhibit feature to fast change pulse, guarantees that disjunction actuator is failure to actuate, the SPD surge current of normally releasing;
4. in the time of lightning protection component inefficacy short circuit, current sensor senses the power current that flows through surge protector, makes the action of disjunction actuator by detecting driver element, disconnects surge protector path;
5. in the time that surge protector leakage current exceedes rated current value, current sensor senses the power frequency leakage current that flows through surge protector, also can make the action of disjunction actuator, disconnects surge protector path.
Accompanying drawing explanation
Fig. 1 is first embodiment of the present invention structural representation.
Fig. 2 is second embodiment of the present invention structural representation.
Specific embodiments
Below in conjunction with drawings and Examples, the present invention is further described:
As shown in Figure 1, the 1st, section breaker, the 2nd, current sensor, the 3rd, lightning protection component, the 4th, detect driver element, the 5th, disjunction actuator, the 6th, shell, the 7th, link gear, the 8th, spring.
The present invention is the surge protector for power electronic circuits system, and described surge protector mainly comprises section breaker, current sensor, detection driver element, disjunction actuator and lightning protection component.
Described current sensor (2) can detect because of lightning protection component the lost efficacy power current and the deteriorated power frequency leakage current bringing of lightning protection component that flow through, in the time that current sensor (2) detects these electric currents, detect driver element (4) and actuating signal can be sent to disjunction actuator (5), drive section breaker (1) to disconnect, thereby SPD is separated with circuit.
Described detection driver element (4) can be made up of devices such as resistance, inductance, electric capacity, voltage-stabiliser tube, diode, wiring boards, it can detect the information of current sensor (2) output, drive disjunction actuator (5), thereby make section breaker (1) action.When thunder and lightning surge by time, it has inhibit feature to fast change pulse, guarantees that disjunction actuator (5) is failure to actuate, the SPD surge current of normally releasing.
Described disjunction actuator (5) is the principle by electromagnet, when producing magnetic force under the effect of iron core at electric current, thereby make the armature movement of disjunction actuator (5), and drive section breaker (1), the SPD in line disconnection by link gear (7).
Described section breaker (1), after disjunction actuator (5) action, can make circuit disconnect by the pulling force of spring (8).
Claims (8)
1. a Novel electric surge protector, is characterized in that: by integrated to lightning protection component, section breaker, current sensor, detection driver element and disjunction actuator and one, be loaded on housing.
2. a kind of Novel electric surge protector according to claim 1, is characterized in that: replace heat protection and overcurrent protection pattern by the pattern of a kind of accessory pathway conduction, control.
3. a kind of Novel electric surge protector according to claim 1, is characterized in that: section breaker and lightning protection component are connected in series.
4. according to the Novel electric surge protector described in claim 1,3 or 4; it is characterized in that: detect the current situation on lightning protection component path by current sensor; and conduction is to detecting driver element, detects driver element and sends the action of signal controlling disjunction actuator, pulls open section breaker.
5. Novel electric surge protector according to claim 1, is characterized in that: detecting driver element can be made up of devices such as resistance, inductance, electric capacity, voltage-stabiliser tube, diode, wiring boards.
6. Novel electric surge protector according to claim 1, is characterized in that: detect driver element and can suppress surge and passes through, stop the action of disjunction actuator, guarantee that surge normally releases.
7. Novel electric surge protector according to claim 1, is characterized in that: disjunction actuator carries out work by principle and the link gear of electromagnet.
8. Novel electric surge protector according to claim 1, is characterized in that: in shell, embed set screws component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413149.3A CN103779830A (en) | 2012-10-24 | 2012-10-24 | Novel surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413149.3A CN103779830A (en) | 2012-10-24 | 2012-10-24 | Novel surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103779830A true CN103779830A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210413149.3A Pending CN103779830A (en) | 2012-10-24 | 2012-10-24 | Novel surge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103779830A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129958A (en) * | 2016-08-15 | 2016-11-16 | 北海市深蓝科技发展有限责任公司 | A kind of Over Current Protection System |
| CN110571775A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | Surge protector with circuit breaking device |
| CN110648808A (en) * | 2019-09-06 | 2020-01-03 | 国网浙江省电力有限公司衢州供电公司 | Single-phase grounding-proof lightning puncture-proof insulator for overhead line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350477A2 (en) * | 1988-07-06 | 1990-01-10 | Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft | Disconnexion device for surge arresters |
| CN101102042A (en) * | 2007-08-03 | 2008-01-09 | 中兴通讯股份有限公司 | A protection device for lightning strike surge protection circuit |
| CN202888818U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
-
2012
- 2012-10-24 CN CN201210413149.3A patent/CN103779830A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0350477A2 (en) * | 1988-07-06 | 1990-01-10 | Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft | Disconnexion device for surge arresters |
| CN101102042A (en) * | 2007-08-03 | 2008-01-09 | 中兴通讯股份有限公司 | A protection device for lightning strike surge protection circuit |
| CN202888818U (en) * | 2012-10-24 | 2013-04-17 | 孙巍巍 | Novel surge protection device (SPD) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129958A (en) * | 2016-08-15 | 2016-11-16 | 北海市深蓝科技发展有限责任公司 | A kind of Over Current Protection System |
| CN110571775A (en) * | 2018-06-06 | 2019-12-13 | 中国石油化工股份有限公司 | Surge protector with circuit breaking device |
| CN110648808A (en) * | 2019-09-06 | 2020-01-03 | 国网浙江省电力有限公司衢州供电公司 | Single-phase grounding-proof lightning puncture-proof insulator for overhead line |
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Application publication date: 20140507 |
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| RJ01 | Rejection of invention patent application after publication |